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R51/3 - engine won't start after carbs cleaning
- Micha
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R51/3 - engine won't start after carbs cleaning
So I went and assembled it and tried to get the engine run.
What I get is right side run after lots and lots of kicking and then it dies (exhaust gets extremally hot there, while only warm on the left). Seems that left is not working, though exhaust gets a bit warm there.
Further start attempts as part of the morning gymnastics are answered with a heavy backfire on the right. Can no longer start the engine. Took the spark plugs out: they where wet. Dried and ventilated the cylinders. Still no success.
When the engine was working, opening the throttle beyond the low-medium rpm responded with choking engine.
Carbs where cleaned.
They get fuel.
Stop screws on carbs where rotated in 2 turns after touching the sliders.
Pilot screws where tightened slightly and turned back 2 turns.
There are sparks from the new PowerDynamo system and valve clearance was checked 3 times.
Any ideas? My leg hurts.
EDIT:
After further thought, could it be that the needle is not at the right height?
I attach pictures. How can I know the required height? The carbs were purchased as new at Mark Huggett, and are 24mm type (the originals were shot).
R51/3 1952
Engine Nr. 529466
Re: R51/3 - engine won't start after carbs cleaning
Don't forget timing and mag/It all works together
and the devil is in the details. Keep alternating plugs as they get wet-then dry.Then new plug.
That was an old tip from Vech.
Ridge Marriott
1962 R 69 S 1975 SS R-90 S
Past:1974 SS R 90 S, 74 R 90 , 77 R 100S, 1960 R 50/2,1973 R 75/5, 1977 R 75/7, 1977 R 100 , 1972 R 75 /5
- Micha
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Re: R51/3 - engine won't start after carbs cleaning
Plugs are the 2nd new set installed.
Ignition & charging are new P-D system.
R51/3 1952
Engine Nr. 529466
- Micha
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Re: R51/3 - engine won't start after carbs cleaning
Does this theory make sense?
Does screwing the pilot screw in - enrich the mixture? Or rather screwing it out?
Looking further at the carbs pictures, I think I'm in the second hole in terms of needle height.
And what does the back fire I got on the right hint suggest?
EDIT:
Plugs are Salis NGK's items and are put in as-is.
Maybe I should play around with the gaps?
I think that they are a direct plug & play, but can be wrong here?
R51/3 1952
Engine Nr. 529466
- schrader7032
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Re: R51/3 - engine won't start after carbs cleaning
Have gone thru any synching steps?
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
- Micha
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Re: R51/3 - engine won't start after carbs cleaning
I forgot to mention that both accelerator & carb cables are also new Salis products.
EDIT:
By the way, I think I read in the assembly instructions of the new P-D ignition/charging system, that I must not operate the method of disconnecting the ignition cable on one side and vice versa, in order to set one side separately. It states - never pull a plug wire while motor running.
R51/3 1952
Engine Nr. 529466
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Re: R51/3 - engine won't start after carbs cleaning
- Micha
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Re: R51/3 - engine won't start after carbs cleaning
Then I parked the bike so I could take care of the gas tank first.
I don't think it is the problem.
R51/3 1952
Engine Nr. 529466
- schrader7032
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Re: R51/3 - engine won't start after carbs cleaning
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.